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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Can survive ~7 days in cow. vast majority <48 hours






2. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge






3. 19-23 (21) days






4. Sperm is produced here






5. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed






6. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)






7. Not under a timeline - cow can not be sold as steak






8. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.

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9. Can survive ~7 days in cow. vast majority <48 hours






10. 4-6 days






11. Animal which has been castrated after puberty






12. Start of the reproductive tract for the female. located outside of the body






13. Front feet and head first. (except for hogs and dogs)






14. Microscopic - make sure not sterile - very few bulls are actually tested






15. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.






16. (LH) causes female's egg to break (her period)






17. What helps regulate spermatogenesis?






18. (FSH) causes egg to mature in females






19. Male on one pin and female on other side






20. FEED






21. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.






22. 265-285 days






23. Milk ~305 days - dry 60 days prior to calving






24. 1-2 days






25. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg






26. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders






27. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.






28. Contains and regulates the temp of the testes for sperm production






29. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.






30. Duct through penis that carries sperm and urine






31. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.






32. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.

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33. What makes the milk flow through the mammary glands?






34. 26 hours after estrus begins






35. Allows extension of penis without fibro-elastic penis






36. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood






37. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)






38. 336 days






39. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat






40. 1. brain function - 2. blood flow - 3. willing female






41. % of fat in milk. makes cheeses and ice cream. regulates cost of milk






42. Animals which have only one estrous cycle (ex: dog - fox)






43. Prevent the cow from getting an infection from the calve






44. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).






45. Parturition is controlled by...






46. Days which have decreasing daylight hours

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47. Depository for semen during insemination. where urine leaves the body






48. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.

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49. Luteolysis happens because of the ____________ hormone






50. Urinary calculi.